6840063 usbsacm stops sending data out when pushed hard

[raymond.c...@sun.com]

Author: Raymond Chen <Raymond.Chen at Sun.COM>
Repository: /hg/onnv/onnv-gate
Latest revision: ddb28a51ae7887ac8129df9cce1e3a77245657c5
Total changesets: 1
Log message:
6840063 usbsacm stops sending data out when pushed hard

Files:
        update: usr/src/uts/common/io/usb/clients/usbser/usbser.c
        update: usr/src/uts/common/sys/usb/clients/usbser/usbser_var.h